Power storage device

Abstract

A power storage device to be mounted on a vehicle includes a power storage unit, an inter-module fuse, a first external terminal, and a second external terminal. The power storage unit includes a first power storage module having a first electrode, and a second power storage module having a second electrode. The first electrode includes a first terminal electrically connected to the first external terminal, and a second terminal. The second electrode includes a third terminal electrically connected to the second external terminal, and a fourth terminal. The second terminal and the fourth terminal are electrically connected. The inter-module fuse is provided on an electrical path between the second terminal and the fourth terminal.

What is claimed is: 
     
         1 . A power storage device to be mounted on a vehicle,
 the power storage device comprising a power storage unit, an inter-module fuse, a first external terminal, and a second external terminal, wherein   the power storage unit includes a first power storage module having a first electrode, and a second power storage module arranged adjacent to the first power storage module in a first direction and having a second electrode,   the first electrode is disposed at one end of the power storage unit in the first direction,   the first electrode includes a first terminal electrically connected to the first external terminal, and a second terminal,   the second electrode is disposed at the other end of the power storage unit in the first direction,   the second electrode includes a third terminal electrically connected to the second external terminal, and a fourth terminal,   the second terminal and the fourth terminal are electrically connected, and   the inter-module fuse is provided on an electrical path between the second terminal and the fourth terminal.   
     
     
         2 . The power storage device according to  claim 1 , further comprising a terminal fuse, wherein
 the terminal fuse is provided on an electrical path between the second external terminal and the third terminal.   
     
     
         3 . The power storage device according to  claim 1 , wherein
 the power storage unit includes a coupling bracket that couples the first power storage module and the second power storage module, and   the coupling bracket is formed to protrude upward from the first power storage module and the second power storage module.   
     
     
         4 . The power storage device according to  claim 1 , further comprising a third power storage module, wherein
 the third power storage module is disposed, with respect to the power storage unit, in a second direction intersecting the first direction,   the third power storage module is disposed between the one end and the other end in the first direction, and   the inter-module fuse is disposed at a position adjacent to the third power storage module in the first direction.   
     
     
         5 . The power storage device according to  claim 1 , wherein a heat insulating material is disposed above the inter-module fuse. 
     
     
         6 . The power storage device according to  claim 5 , wherein the heat insulating material is provided with an opening that communicates with a space in the power storage device. 
     
     
         7 . The power storage device according to  claim 1 , further comprising a lower case, wherein
 the inter-module fuse is disposed on the lower case with a thermally conductive member interposed therebetween.